Home / 15,328.54-21,154.01-8,614.15

Finding the Fourth Proportional to 15,328.54, 21,154.01 and 8,614.15

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Solution

The fourth proportional to 15,328.54, 21,154.01 and 8,614.15 is: 11,887.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,328.54 : 21,154.01 = 8,614.15 : x
  2. Step 2: Convert to fraction form
    15,328.54/21,154.01 = 8,614.15/x
  3. Step 3: Cross multiply
    15,328.54x = 21,154.01 × 8,614.15
  4. Step 4: Simplify right side
    15,328.54x = 182,223,815.24
  5. Step 5: Solve for x
    x = 182,223,815.24/15,328.54
  6. Step 6: Final answer
    x = 11,887.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.